81747-32-2

Upstream product

• 67-56-1 methanol 
• 54389-67-2 4,4‘-dibromo-2,2‘-bis(carboxyl)-1,1‘-biphenyl 
• 181765-86-6 5-bromo-2-iodo-benzoic acid methyl ester 
• 5794-88-7 5-Bromo-2-aminobenzoic acid 
• 74-88-4 methyl iodide 

Downstream Products

• 31458-17-0 4,4'-dibromo-2,2'-dimethyl-1,1′-biphenyl 
• 142068-89-1 4,4'-bis(3,3',4,4'-tetramethyl-2,2'-dipyrrylmethyl)-2,2'-dimethyl-1,1'-biphenyl 
• 142068-88-0 4,4'-bis(3,3',4,4'-tetramethyl-5,5'-dicarboxy-2,2'-dipyrrylmethyl)-2,2'-dimethyl-1,1'-biphenyl 
• 142068-87-9 4,4'-bis<3,3',4,4'-tetramethyl-5,5'-bis(ethoxycarbonyl)-2,2'-dipyrrylmethyl>-2,2'-dimethyl-1,1'-biphenyl 

Relevant academic research and scientific papers

Cavitand-Based Pd-Pyridyl Coordination Capsules: Guest-Induced Homo- or Heterocapsule Selection and Applications of Homocapsules to the Protection of a Photosensitive Guest and Chiral Capsule Formation

A 2 : 4 mixture of tetrakis[4-(4-pyridyl)phenyl]cavitand (1) or tetrakis[4-(4-pyridyl)phenylethynyl]cavitand (2) and Pd(dppp)(OTf)2 self-assembles into a homocapsule {12 ? [Pd(dppp)]4}8+ ? (TfO?)

DIHALIDE, POLYMER COMPOUND AND METHOD FOR PRODUCING SAME

It is an object of the invention to provide a novel π-conjugated polymer compound capable of expecting an application as a functional material having a solubility, a heat resistance, an electrochemical activity and a fluorescence, and a method for producing the same. A dihalide is represented by the following formula: (wherein R1 represents a halogen, R2 represents an alkyl group or a silyl group having a substituent, and R3 represents a hydrogen or an alkyl group).

Electron transfer in bis-porphyrin donor-acceptor compounds with polyphenylene spacers shows a weak distance dependence

A series of phenylene-bridged bis-porphyrin adducts have been synthesized, containing one, two, or three phenyl bridges. Complete synthetic details are provided. For studies of photochemical electron transfer, mixed metals wre incorporated, with zinc in one porphyrin macrocycle and FeIII (bis-imidazole) in the other macrocycle. When photoexcited, an electron is transferred from Zn to FeIII. The rate of this process drops only slowly with distance: kα exp(βr), with β = 0.4 A?-1. This dependence can be predicted by a simple theory which assumes that the drop does not reflect increased distance, but rather reflects the break in conjugation which occurs at each phenyl juncture due to the biphenyl twist angle of ca. 50°. Inefficient overlap in this angle results in a rate drop of ca. 6-fold per phenyl ring, in good agreement with the observed results.